The 30% is not only management fees according to Mr Rutten, but also agent and lawyer fees, and probably some other fees, like gym and trainer fees.
It is a sad commentary on society, greed and loyalty when people are still defending Mr Overeem after reading that interview - assuming it's accurate of course.
No read carefully, Bas is saying that in his OWN case he has to spend that kind of money on lawyers, publicity etc., not that golden glory actually spent that money on legal fees etc. for Overeem.
This is a complete diversion and not relevant to the situation at all, all that matters is what GG did for Overeem, not whatever dog and pony show Bas has going on in his own life and point in his career (which are very different from Overeem).
In all probability, Overeem is not getting jack from his management that his talent and rise wouldn't have gotten him anyway. He certainly hasn't been involved in any legal battles etc. that would account for 35% of his income going to legal fees etc. Actually no they're even worse than him managing himself because they couldn't even get him paid for all his K1 fights. They're leeching money for doing nothing, it's not about Overeem's greed, they're the greedy ones.
Do his trainers deserve some credit for his improvement in fighting? Maybe. His management? Those are completely separate. What exactly did they do that any other top level fighter isn't getting on his own anyway?
I mean let me get what you're saying ... a guy should give 35% of his hard work to his "management" (i.e. people who do nothing), another 30-40% of the remaining in direct income taxes to the government (i.e. people who also do nothing), the remaining money is taxed to shit ON TOP of all this in the form of sales taxes, VAT etc. for everything he buys, pays for his own (mandatory in Europe) health insurance etc., and he only gets to keep the handful of percents that's left from all his hard work, and HE'S the greedy one? Not all those parasites living off his hard work?